Electric-arc lamp



(No Model.)

F. WRIGHT. ELECTRIC ARG LAMP.

No. UJOS, Patented June 21,1898.

WITNESS/5S N VEA/T019 A TTOHNE YS.

w: nonms Pmzns ou, Pwmournm wAsHmmcu, n c.

lUNiTisn STaTns lPaTisNT @Triton FREDERC VRIGHT, OF NEVBURG, NEXV YORK.

ELECTPAEC=APSC LAM P.

SEECFICA'ILION forming part of Letters Patent No. 606,108, dat/edd' une 21, 1898.

Application filed October 7, 1897. Serial No. 654,374. (No model.) v

T @ZZ whom, it Wray con/ecru:

Be it known that I, FREDERIC WRIGHT, of Newburg, in the county of Orange and State of New York, have invented a new and Improved Arc-Lamp, of which the following is a full, clear, and exact description.

This invention relates to electric-arc lamps; and the object is to provide a lamp of this character having a series of carbons arranged in magazines and also having a central main for automatically feeding the carbons one after another as they are consumed; and a further object is to so arrange tlie carbons that there will be practically little or no shadows formed.

I will describe an arc-lamp embodying my invention and then point out the novel features in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a vertical section of an arc-lamp embodying my invention. Fig. 2 is a plan view of a carbon-lock employed, and Fig. 3 is a section through the line 3 3 of Fig. 1.

Referring to the drawings, 1 designates a casing, in which is arranged a main solenoid 2 and an auxiliary or shunt solenoid A swinging lever 4, of insulating material, is pivotally connected at one end to the core 5 of the solenoid 2 and at the other end to the core G of the solenoid 3.

Rigidly ixed to one side of the casing l is a magazine 7 for holding a series of carbons, and pivotally connected to the opposite side of the casing 1 is a similar magazine 8 for holding carbons. These magazines are arranged on an incline, so that the feed-tubes 9 and 10, leading from the lower end of the respective magazines, will converge, as plainly shown in the drawings. A

Arranged on the lower end of each of the tubes 9 and 10 is a locking device for holding carbons. The locking device consists of a plate 11,havin g an opening through it slightly larger than the carbon, said plate being pivoted to the lower end of the tube, as indicated at 12. At its outer side each locking-plate has a lug 13, from which a spring 14 passes to a connection with a screw 15, extended through a lug 1G on the tube and having a nut on its upper end above said vlug. By means of these screws it is obvious'that the tension of the springs 14 may be'regulated. From the inner ends of the plates 11 iiexible connections 17 18 extend upward through eyes on the tube and into the casing 1, where they are respectively connected to opposite ends of a bar 19, and from the ends of this bar li) a cord 2O extends to a .connection with a finger 2l, attached to the lever 4. It will be seen that the connection of the cord 2O with the arm 21 is .at one side of the pivotal point of the lever 4, sothat when said lever is rocked in one direction the'clamping-plate will be drawn upward and momentarily release the carbon and allow it to drop a short distance.

Extended downward from the lever 4 is a linger 22, from which a rod 23 extends to a connection with the magazine 8. From the end of the lever 4, at the opposite side of its pivotal point from that to which the cord 2O is attached, a spring 24 extends to an adjusting-screw 25. This adj ustingscrew 25 passes through a perforation in the bottom of the casing 1 and is provided with a 'nut at its outer end.

Toprevent the carbons from falling too far or from falling out by accident, I provide stop-fingers 25a and 26. The stop-'finger 25n is connected to the tube of the magazine 7 'and has its free end curved inward to the line of movement of the carbon. The nger 2G is connected to the tube 10 and is of sin1ilar construction to the iinger 251 The lead- `ing-in wire is designed to be connected with is a wire 34, connecting with a resistance 35, arranged in the casing 1, and from the other end of this resistance a wire 36` leads to a contact-piece 37 in the casing and designed to be engaged by a contact-arm' 38, carried by IOO scales the lever si and in connection with the rod 23 by means of the arm El.

ln operation the current from the leading in wire will llow through the main solenoid 2 and thence to the tube 9, thence through the carbon in said tube .fl and across to the carbon in the tube l0, and from this tube O the current will ilow through the wire 3l to the leading-out wire. .Vhen the above current is established, the solenoid 2 will draw Jthe core 5 upward, and this core will rock the lever 17, and this rocking el the lever 1L by drawing upon the rod 23 will slightly roel: the magazine 8, thus causing the carbon in the tube lO to separate from the carbon in the tube il, thus establishing the are. The parts will retain this position until the are has received the same resistance as that ol` the solenoid 23, when the current will llow through said solenoid 23, and by drawing upward the core (l will rock the leverft, and this rocking ol' the lever l will draw the clamping or locking plates ll upward and allow the earbens to slide slightly and decrease the resistance of the are. Then when the normal resistance is again established the lever -l will be rocked to its first position, and the springs l-l will. cause the plates ll to clamp tightly against the carbon.

lt will be seen that when the lower carbons are so `far consumed that their upper ends will be sulj stantially level with the upper ends of the tubes fl and lO other carbons will roll into place in the magazine and lollow downward to the Vfirst carbons. 0l' course when a carbon 'is so liar consumed that it can be no longer engaged bythe locking or clamping plate the point will fallout, and then the next carbon will move thr nigh the clam pin g or locking plaie. When the carbons are changing, the current will [low from the binding-post 27 through the resistance 35, the wire 23d, the contactpoint 237, the contact-arm 3 the arm 2l, the rod 23, and the wire 3l to the leading-out wire. The spring 2li by rocking the lever l will establish a connection between the parts S7 and 3S. Of course at this time the main current through the solenoid 2 will be broken; but the current will be maintained through other lamps that may be in the series.

ly arranging the cai-bons to eonvergm as shown in the drzuvings, it is obvious that the disagreeable shadows of the ordinary lamp willbeavoided. Themagazinesinaybemade otany desired site or to hold anywhere from two lo titty carbens.

llaving thus described my invention, l claim as new and desire to secure by Letters Patent l. An arclamp, comprising a easing, carbon-magazines mounted on said easing, carbon-holder tubes extended from the magazines and converging, carbon-locking plates on the tubes, and moans for automatically between said rocking lever and the pivoted F maga-zine, and electric means to r rocking said lever, substantially as speeilied.

t nn areslamp, eomprisinga casing, a niagazine rigidly attached to one side thereol', the

said magazine having converging tubes, a

rocking lever in the casing, a rod connecting said lever with the swingi magazine, a solenoid in the main circuit, and a core l'or said solenoid, having connection with the rocking lever, substantially as specilied.

5. An arc-lamp, comprising a easing, can bon-magazines mounted on said casinj, one of said nntgzizines being mounted to swing relatively to the casing, leciting-platei-s l'nr the carbons, arocliing lever in the easing, con" nections between said lever and the loeliingplates, a connection between said lever and the swinging magazine, a solenoid in the main circuit, having its cere connected 'to one end of theroching lever, and a solenoid in a shunt circuit, having its core connected to the opposite end of said lever, substantially as speci-- lied.

G. in areslamp, comprising a easing, car-- bon-magazines mounted on said easing', carbon-holding tubes extended iti-om the lower ends el said magazines, loching-plates pivoted to the lower ends ol. said tubes, adjust able springs for holding said plates in a lock,- ing position, a lever mounted to swing in the casing, flexible connections between said loci@ ing-plates and said lever at one side olf its pivotal point, a solenoid in the main circuit, having its core connected to one end ol? said lever, a solenoid in a shunt-circuit, haring its core connected to the opposite end ol said lever, a rod extended from a metallic part carried by said lever to a connection with one eli' the magazines, the said rod forming a conductor, a contact point or arm operated 'by said lever, to e'ilgage with a lixcd contact, a wire leading from said lixed contact through a resistance to the leading-in wire, and a wire leading from a magazine to the leiulinganit wire, substantially as specified.

W itnesses:

ltn'wann rlioetznn, Sain unt tl. l )itin le n',

TIO 

